TABLE OF CONTENTS

TARIFFS SETTING. TOPICAL INTERVIEW

Economic basis of power grid digitalization

Interview with Korolev V.G., Deputy Head of the Federal Antimonopoly Service of the Russian Federation

 

EVENTS

IV All-Russian Conference “Development and Increase of Operational Reliability of Distribution Electrical Networks”

Review of conference reports

 

DIGITAL NETWORKS

Digitalization sensitive issues

Medvedeva E.A., Deputy Director of Department for Operational Control and Management in Power Engineering of the Ministry of Energy of the Russian Federation

 

Internet in Power Engineering

“Siemens Transformers”, LLC

 

Cyber-safe digital substation

JSC “Cheboksary electrical apparatus plant”

 

 

 

Network equipment modernization when forming digital power distribution zone

“MNPP “ANTRAKS”, LLC

 

 

 

20 kV ELECTRICAL GRIDS

Improvement of technical solutions on structure development and operation reliability enhancement of 20 kV electrical network in megacity

Mayorov A.V., Ph.D., Director General, JSC “UNECO”

 

Nowadays, the peculiarities of megacities impose high demands on the reliable and uninterrupted electric power supply. 20 kV electrical network development in large megacities is caused by the increase of single engineering facilities capacity up to 15-30 MW. The resources of 6-10 kV networks to provide such capacities are almost exhausted. 20 kV electrical network further development requires both the improvement of technical solutions and the updating of technical and normative documentation in terms of the electrical network design and operation.

Development of technical solutions and recommendations for the transition of existing 6-10 kV networks to 20 kV in rural areas

Ivanov V.E., First Deputy General Director – Chief Engineer of PJSC “MOESK”

 

GRIDS MANAGEMENT

Requirements for islanding automation system of distributed generation units, taking into account the relevant parameters of adjacent network and electrical load

Ilyushin P.V., Pazderin A.V.

 

The features of separating power stations with its auxiliaries and 6-20 kV load from power system are determined. The calculation results of modes when separating a single generator and changing electrical load are given. Regularities that may also appear in other modes are found out. The load stability influence on the choice of emergency control measures for allocated power district is determined. Requirements for power plant unloading speed when its forced separation from power system are formulated.

Singular analysis application for determining sensory branches in electric power systems

Belov E.I., Latmanizova Y.N., Sorokin E.V.

 

Two methods of sensory branches searching in power system are considered (experimental method based on disturbances simulation in the RastrWin software and singular analysis). The results obtained by the two methods are compared. A conclusion regarding to singular analysis applicability for determining sensitive branches of electric power systems is made.

ELECTRIC POWER METERING

Experimental research to identify additional factors affecting on technical losses level

The Branch of IDGC of Centre, PJSC — Smolenskenergo

 

POWER QUALITY

Features of modular multilevel converters application for power quality indexes normalization in electrical network

Mustafa G.M., Gusev S.I.

 

The application of width-modulated modular multilevel converters for reactive power compensation, voltage active filtration and balancing in industrial networks is considered. The classification of the converters intended for these purposes is given. The operation features of converters without interphase power exchange in the balancing mode are considered.

OVERHEAD TRANSMISSION LINES

Supports and foundations for smart grids

Reports review of the V international conference “Supports and foundations for smart grids: innovations in design and construction”

 

 

 

Flights on notes

PJSC “IDGC of North-West”

 

Analysis of effect produced by overvoltage suppressors preventing power arc occurrence on lightning protection of overhead lines and 10 kV switchgears

JSC “NPO “Strimer”

 

CABLE LINES

Check of 6-500 kV cable lines at short circuits. Thermal stability and non- ignition conditions

Dmitriev M.V.

 

The new standards for 6-500 kV cable lines issued in recent years no longer provide guidance on cable inspection for non-ignition under the influence of short-circuit currents, and, for this reason, engineers have excluded such testing from their practice. In the new article an attempt is made to understand whether it is possible not to be afraid of ignition of 6-500 kV cable lines at short circuits.

Service life extension of XLPE cables in medium voltage electrical networks by neutral resistive grounding

PJSC “MOESK”

 

 

 

ACR for cable-overhead lines. History in brief

Comments to the publication

 

 

 

RELAY PROTECTION AND AUTOMATION

Take full advantage of the new capabilities of domestic microprocessor relay protection and automation devices

“RZA SYSTEMS”, LLC

 

 

 

A new method of protection against earth faults in 6-35 kV distribution electrical networks

“ABB”, LLC

 

EQUIPMENT

Modified series of magnetically controlled shunt reactors and reactive power sources

Bryantsev A.M., Bryantsev M.А., Makarova M.A.

 

Existing designs of controlled shunt reactors are shown in the article. A new modified series of magnetically controlled shunt reactors, its design distinguishing feature and its extended functional capabilities are explained. Negative side of сurrently in use desing which caused a development of modified magnetically controlled shunt reactors is mentioned. Both types magnetically controlled shunt reactor and thyristor-controlled shunt reactor have non-linear parameters of current and voltage that cause negative effect on power quality. Notably that harmonic distortion of current and voltage in the modified series of magnetically controlled shunt reactors is lowered to meet the standards requirements. The implementation of power quality control in a grid with non-symmetric non-linear load by modified series of reactive power sources with independent phase regulation is suggested.

Means of protection of electrical equipment of autonomous power supply systems from the exposure of powerful electromagnetic pulses of natural or artificial origin

Fominich E.N., Khromov V.V., Filippov V.G., Kuryakov E.V.

 

In this article are considered modern special voltage surge protection devices designed to protect autonomous power supply systems for a nominal voltage of up to 1000 V from electromagnetic influences generated by powerful sources of natural and synthetic origin. The technical characteristics of these devices and the results of experimental studies are given.

Effective development of control current systems

“NTTs “Mekhanotronika”, LLC

 

DIAGNOSTICS AND MONITORING

System for monitoring and diagnostics of power transformers and gas insulated switchgears at 110/20 kV “Medvedevskaya” substation

“BO-ENERGO”, LLC

 

New development: MIKO-9 four-channel milliometer and its capabilities

“SKB EP”, LLC

 

 

 

Аnalysis of the technical condition of elements distribution and consumption power electrical submersibles units oil production electrotecnical complex

Romanov V.S., Goldstein V.G., Vasiljeva N.S.

 

The condition and the level of operation quality of the electrical complex of submersible electrical equipment of oil fields directly depend on the accident-free and reliable operation of the constituent elements of the well equipment, especially the transmission, distribution and consumption systems, the main ones being submersible electric motors (SEM) and submersible cable line (SCL). Submerged electric equipment (SEE) of oil production, including SEM and SCL during operation are subject to the influence of a large number of external factors and impacts, their operation is associated with a variety of operating modes. To obtain information about their technical status use the data of failure statistics of operation. It can be argued that this method of analyzing the state of the object is the most acceptable for obtaining, describing and expressing in quantitative equivalent the reliability indicators of SEE. In order to fully understand the current state of the SEE park, including the SEM and SCL, the article presents the results of a statistical accidents rate. At the current time, data on technological violations at oil production enterprises have been collected and analyzed with the development of recommendations for improving the reliability of the electrical complex of SEE oil production.

PREPARATION FOR AUTUMN AND WINTER

Integrated preparation for cold weather in IDGC of Center and Volga Region, PJSC

ANNIVERSARY

55 years of devotion to science

To the anniversary of Goldstein V.G. professional activity

 

“FORENERGO” manufacturers association – history of a successful project

To the 20-th anniversary of the company

 

JOURNEY THROUGH THE PAST

High-voltage overhead transmission lines

Construction of the world’s first overhead transmission lines with a voltage over 1 million volts started 40 years ago in the USSR

 

INDUSTRIAL INJURIES

Lessons learned from accidents

Russian Federal Service for Ecological, Technical and Atomic Supervision